Press u re-regulator



(No Model.)

H. GIESSENBIER. PRESSURE REGULATOR.

Patented Apr. 19, 1892.

Ill -rvllllll.

In v

UNITED STATES I PATENT OFFICE.

HENRY GIESSENBIER, OF ST. toms, MISSOURI.

PRESSURE-REGU LATOR.

SPECIFICATION forming part of Letters Patent N0. 473,069, dated April 19, 1892.

Application filed December 14, l891.- Serial No. 415.044. (N0 model.)

To all whom it may concern.-

Be it known that I, HENRY GIESSENBIER, of the city of St. Louis and State of Missouri,

have invented certain new and useful Improvements in Pressure-Regulators, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My inventionrelates to improvements in pressure-val\-'es; and it consists in the novel arrangement and combination of parts, as will be more fully hereinafter described, and designated in the claims.

In the drawings, Figure 1 is a vertical longitudinal section of my complete invention: Fig. 2 is a similar view with parts broken away, showing a modification of my invention. Fig. 3 is an enlarged detail view, in side elevation, of the valve-stem. Fig. 4 is a top plan view of the valve with the cover removed therefrom.

Referring to the drawings, 1 represents a casting, which is suitably shaped and formed to receive the various parts comprising my invention. The upper end of the said casting is provided with a bore 2, which extends a suitable depth, and where said bore terminatesa shoulder 3 is formed, which shoulder is of sufficient width, and leading from said shoulder is asecond bore 4 of smaller diameter than the first-namedbore. Formed upon the internal periphery of each bore are cut screw-threads, which are adapted to receive external screw-th reads formed on the several detachable parts, as hereinafter more fully set forth. 3

5 represents a vertical longitudinal bore or passage formed in the casting 1, leading from the bottom of the same and communicating with the bore 4.

6 represents an'annular groove formed in the bottom of the said casting and surround ing the vertical passage 5, leaving a protruding surface 7, against which the valve is adapted to come in contact. The metal forming a part of the casting is extended at the upper end of the passage 5, but does not come in contact with the remaining parts of the device.

8 represents a horizontal extension formed with the said casting, having a nipple9, over which a rubber pipe is adapted to placed for connecting the said valve to a suitable receptacle, into which the gas is desired to be dis charged. .10 represents a horizontal bore formed in said extension, which extends a sufficient distance and communicates with a vertical passage 11, which passage is in communication with the bore 4.

12 represents a gage, which is in communication with a second vertical passage 13, which passage also communicates with a horizontal passage 10, by which means the amount of pressure is accurately ascertained.

Having described the construction of the casting, I shall now proceed to describe the detachable parts of the same. Thelower end of the said casting is provided with external screw-threads, which are received by internal screw-threads formed in the union 14. The said union is provided upon its lower end with screw-threads, by means of which the valve is connected to agas-receptacle.

15 represents an aperture formed in the said union, which communicates with a smaller passage 16, through which the gas enters the valve. The aperture 15 is so constructed as to receive the valve-seat, as shown in Fig. 1.

17 represents a removable ring, which is provided with external screw-threads, which are adapted to receive the internal screwthreads formed in the bore 4, and saidring is provided with an annular flange 18, which flange comes in contact with the shoulder 3 when the said ring is united to the casting, as shown in Fig. 1. To the annular flange of the ring is secured a metallic diaphragm 19, by which, when the parts are united, as shown in said figure, an air-tight connection is formed.

20 represents a nut, which is secured to the center of and to the upper surface of the said diaphragm, and is provided with internal screw-threads, which threads receive the external screw-threads formed upon the upper end of the valve-stem 21. The nut 20 is provided with an external screw-threaded extension 22, which threads receive the corresponding threads formed internally with the cap 23. The cap 23 is movable and is adapted to cover the upper end of the valve-stem, and when united, as shownin Fig. 1, a rubber washer 24 is interposed between the lower edge of said cap and the surface of the nut 20.

To the lower end of the stem 21 is secured a valve 25, which consists of a shell 26,'suitably attached to the said lower end of the stem and secured within said shell, and surrounding the said stem is a rubber packing or Washer 27, which preferably extends above the upper edge of the said shell and is adapted to come in contact with the lower surface of the casting 1, surrounding the vertical passage 5. To the upper or screw-threaded end of the stem 21 is secured a button 28, by means of which the said stem can be manipu lated without removing the valve from the gas-receptaclethat is to say, by turning the said button in either direction the said valve 25 can be raised or lowered and consequently be brought to or from the lower end of the casting 1. It will be noticed byan inspection of the drawings that the vertical passage 5 is larger in diameter than the valve-stem 21, and consequently allows the gas contained in the gas-receptacle to which my valve is attached to freely pass between said stem and the walls of said passage, or, in other words, around the said stem and into the bore 4.

29 represents a cover for the valve, and is provided adjacent to the shoulder 30 with external screw-threads, which are adapted to engage the internal screw-threads formed upon the upper interior walls of the bore 2 for securing the said cover to the valve, or, more properly, to the casting 1.

Encircling the cap 22 and interposed between the upper surface of the diaphragm 19 and the cover 29 is a coil-spring 31, by which, when the parts are united, as shown in Fig. 1, additional strength is given to the said diaphragm, and it is less liable to become broken when the valve is in operation.

The cover 29 is provided with an extension 32, and in said extension is formed a vertical opening 33.

In Fig.2I have shown a modification of my invention, in which I employ a rubber diaphragm in place of the metallic one previously described. In this instance the rubber diaphragm encircles the upper end of the stem 21 and rests upon the shoulder 3, formed in the casting. The center of the said diaphragm, or that portion through which the stem 21 passes, is held rigidly to the said stem by means of nuts 34, which are screwed upon said upper end of the stem, the said dia phragm being interposed between the two. In order to secure the said rubber diaphragm in its proper position within the casting 1 a metallic washer 35 is placed upon the upper edge or surface of the said diaphragm and the lower or depending portion of the cover adapted to come in contact with the said ring when the parts are united, thereby holding the said diaphragm and making an air-tight connection. When the regulator is placed upon the gas-receptacle, the gas contained in the same will pass through openiu g 16 around the valve 25 up the vertical passage 5, surrounding the stem 21 into the space formed by the diaphragm and the bore 4, fromwhence it passes into the vertical opening 11 to the horizontal passage 10 to the barrel or other receptacle desired to be supplied with the gas. Should the pressure ofthe gas be too great, the diaphragm will be caused to expand and draw the valve 25 toward its seat, and thus limit or entirely out oif the flow of gas.

The pressure of the gas may be regulated by turning the button 28, which will in consequence move the valve 25 to or from the lower end or protruding portion of the casting 1.

Having fully described my invention, what I claim is 1. In a pressure-regulator, the combination of a casting having an extension 8 formed integrally with the same and provided with a horizontal passage 10, a vertical passage 11, communicating with the said horizontal passage and an opening into the interior of said casting, a vertical passage 5, bores 2 and 4, formed in the upper end of the casting and of different dimensions, forming a seat 3, a diaphragm disposed above said seat, a cover 29, provided with external screw-threads engaging with internal screw-threads formed in the bore 2, a stem 21, adjustably secured to the diaphragm and disposed within the passage 5, a cap 23, mountedupou the upper end of said stem, and a valve at the lower end of said stem and adj ustablc to and from the bottom of said passage, the passages 11 and 15 communicating with the space formed by the bore 4 and the diaphragm, substantially as set forth.

2. In a pressure-regulator, the combination of a casting havingan extensionS formed in tegrally with the same andhaving a horizontal passage 10, a vertical passage 11, communicating with the said horizontal passageand opening into the interior of the said casting, a vertical passage 5, bores 2 and 4, formedin the upper end of the said casting of different dimensions, a screw-threaded collar secured in the smaller of said bores, an annular flange formed on the said collar, ametallic dia phragm secured to said flange, a cover,such as 29, provided with external screw-threads engaging with internal screw-threadsformed in the larger of said bores, a nut secured to the said diaphragm and adapted to receive a cap 23, a spring 31, a stem, such as 21, adj ustable within said vertical passage, and a valve located at the lower end of said stem and adjustable to and from the bottom of the said passage, the passages 11 and 5 communicating with the space formed by the bore 1 and the diaphragm, substantially as set forth. In testimony whereof I affix my signature in presence of two witnesses.

HENRY GIESSENBIER. \Vitnesses:

C: F. KEELER, ALFRED A. them. 

